CVE-2023-27538

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-27538
An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://hackerone.com/reports/1898475 Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html Mailing List
https://security.gentoo.org/glsa/202310-12 Third Party Advisory
https://security.netapp.com/advisory/ntap-20230420-0010/ Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:*
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*

Configuration 9 (hide)

OR cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
History

27 Mar 2024, 14:46

Type Values Removed Values Added
CPE cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
First Time Splunk
Splunk universal Forwarder

20 Oct 2023, 18:43

Type Values Removed Values Added
CPE cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:o:broadcom:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:9.0:-:*:*:*:*:*:*
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
References (GENTOO) https://security.gentoo.org/glsa/202310-12 - (GENTOO) https://security.gentoo.org/glsa/202310-12 - Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html - (MLIST) https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html - Mailing List
References (CONFIRM) https://security.netapp.com/advisory/ntap-20230420-0010/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20230420-0010/ - Third Party Advisory
First Time Netapp h700s Firmware
Netapp h700s
Netapp h300s
Netapp h410s Firmware
Netapp h500s Firmware
Netapp active Iq Unified Manager
Broadcom brocade Fabric Operating System Firmware
Netapp clustered Data Ontap
Debian debian Linux
Netapp
Netapp h410s
Netapp h300s Firmware
Netapp h500s
Debian
Broadcom

11 Oct 2023, 11:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202310-12 -

21 Apr 2023, 23:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html -

20 Apr 2023, 09:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20230420-0010/ -

19 Apr 2023, 20:15

Type Values Removed Values Added
Summary An authentication bypass vulnerability exists in libcurl v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection. An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.
References
  • {'url': 'https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/', 'name': 'FEDORA-2023-7e7414e64d', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'FEDORA'}
  • {'url': 'https://curl.se/docs/CVE-2023-27538.html', 'name': 'https://curl.se/docs/CVE-2023-27538.html', 'tags': [], 'refsource': 'CONFIRM'}

14 Apr 2023, 00:15

Type Values Removed Values Added
References
  • (CONFIRM) https://curl.se/docs/CVE-2023-27538.html -

10 Apr 2023, 16:36

Type Values Removed Values Added
References (MISC) https://hackerone.com/reports/1898475 - (MISC) https://hackerone.com/reports/1898475 - Exploit, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/ - Mailing List, Third Party Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
CWE CWE-287
First Time Fedoraproject
Fedoraproject fedora
Haxx libcurl
Haxx

09 Apr 2023, 04:16

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/ -

30 Mar 2023, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2023-03-30 20:15

Updated : 2024-03-27 14:46

NVD link : CVE-2023-27538

Mitre link : CVE-2023-27538

CVE.ORG link : CVE-2023-27538

JSON object : View

Products Affected

netapp

  • h700s_firmware
  • h300s_firmware
  • h500s
  • h300s
  • h410s
  • h410s_firmware
  • h500s_firmware
  • active_iq_unified_manager
  • clustered_data_ontap
  • h700s

splunk

  • universal_forwarder

debian

  • debian_linux

haxx

  • libcurl

broadcom

  • brocade_fabric_operating_system_firmware

fedoraproject

  • fedora
CWE
CWE-287

Improper Authentication

CWE-305

Authentication Bypass by Primary Weakness